Brake mechanism of looms.



No. 810,113. PATENTED JAN. 16, 1906. A. A. GORDON, JR.

BRAKE MECHANISM OF LOOMS. APPLICATION rum) M127. 1995.

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I No. 810,113. PATENTED JAN. 16, 1906.

A. A. GORDON, JR. BRAKE MECHANISM OF LOOMS.

APPLICATION FILED FEB. 27. 1905.

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m N TN shown in Fig. 2 in a different position.

UNITED STATES PATENT OFFICE.

ALBERT A. GORDON, JR, OF'WOROESTER, MASSACHUSETTS, ASSIGNOR TO OROMPTON & KNOWLES LOOM WORKS, A CORPORATION OF MAS- SAOHUSETTS.

BRAKE MECHANISM OF LOOMS.

Patented Jan. 16, 1906.

Application filed February 27, 1905. Serial No. 247,417.

T0 at whom it may concern:-

Be it known that I, ALBERT A. GORDON, J r., a citizen of the United States, residing at lVorcester, in the county of Worcester and State of Massachusetts, have invented certain new and useful Improvements in Brake Mechanism of Looms, of which the following is a specification.

My invention relates to brake mechanism, and more particularly to the brake mechanism of looms.

The object of my invention is to improve upon the ordinary construction of the mechanism for operating the brake of a loom and to provide mechanism for conveniently and effectively releasing the brake from the brake-wheel when the loom is stopped and it is desired to turn the loom by hand.

My invention consists in certain novel features of construction of my improvements, as will be hereinafter fully described.

I have only shown in the drawings a detached portion of a brake mechanism of a loom embodying my improvements sufficient to enable those skilled in the art to understand the construction and operation thereof.

Referring to the drawings, Figure 1 is an end view of a loom-frame, showing the brake-wheel on the main shaft of the loom and a brake-lever with my improvements combined therewith. Fig. 2 shows, on an enlarged scale, some of the parts at the left in Fig. 1 detached looking in the direction of arrow a, same figure. Fig. 3 shows the parts Fi 4 shows the parts shown in Fig. 3 in a diffefent position. Fig. 3, looking in the direction of arrow 1), same figure. Fig. 6 is an end view of a modified construction of my improvements applied to a different form of shipper-lever looking in the direction of arrow 0, Fig. 7. Fig. 7 is a side or edge view of the parts shown in Fig. 6 looking in the direction of arrow d, same figure. Fig. 8 corresponds to Fig. 6, but shows some of the parts in a different position; and Fig. 9 corresponds to Fig.8, but shows some of the parts in a different position. Figs. 2 to 9 inclusive, are shown on an enlarged scale.

In the accompanying drawin s, referring to Figs. 1 to 5, inclusive, 1 is the loom side or frame. 2 is the main or crank shaft. 3 is a Fig. 5 is a section on line 5 5,

brake-lever 4 is a side extension or ear 4,

through which loosely passes the lower end of a vertically-moving connector 8. On the lower end of the connector 8 is an adjustmgnut 9, adapted to engage the under side of the ear 4". The upper end of the connector 8 is pivotally attached to a lever 10, in this instance by a hooked end 8, (see Fig. 5,) extending through an opening in said lever. The lever 10 has a hub 10 at its lower end, which is pivotally mounted on a stud 11, secured to a stationary bracket or stand 12. (See Fig. 5.) The upper end of the lever 10 extends above the slotted guide-arm 13 for the shipper-lever 14 and has a side horizontal extension 10 thereon, (see Fig. 1,) which extends across the pathway of and is adapted to be engaged by the shipper-lever 14. The upright part of the lever 10 has a bearing for a rocking pin or shaft 15. Secured on one end of said rocking pin 15 is the hub 16 of a cam arm 16, which is adapted to extend within a recess 13 in the shipper lever guide-arm 13 and to engage a shoulder 13 at the outer end of said recess. (See Fig. 3 On the opposite end of the rocking pin 15 is secured, in this instance by a set-screw 17, the hub 18 of an arm 18, having a horizontally-extending side projection 18", (see Fig. 5,) forming a handle or engaging end. On the inner side of the hub 18 of the arm 18 is a lug or projection 18', which extends in the path of and is adapted to engage two lugs or rojections 10 on the central portion of the ever 10. The engagement of the lug 18 with the projections 10, as shown in Figs. 2 and 3, limits the rocking movement of the pin 15, and consequently of the cam-arm 16 and the arm 18.

The operation of my improvements (shown in Figs. 1 to 5, inclusive, and above described) will be readily understood by those skilled in the art. When the loom is at rest and it is not desired to turn the loom by hand, the

arts may remain as shown in Figs. 1 and 2 with the brake-lever engaging the brake- 4 is the TOO wheel through the action of the spring 6. When it is desired to release the brake-lever to turn the loom by hand, the engaging end 18 on the arm. 18 is raised. The raising of the arm 18, fast on the rocking pin or shaft 15, causes said shaft to rock, and with it the cam-arm 16. The outer end of the cam-arm 16 will engage with the shoulder 13 on the shipper-lever guideway 13, and the lug 18 on the hub 18 of the arm 18 coming into engagement with the lug on the lever 10 will rock said lever 10 and move it from the position shown in Fig. 2 to the position shown in Fig. 3. The movement of the lever 10 through connector 8 and nut 9 will raise the outer end of the brake-lever 4against the action of the spring 6 and disengage the brake end 4 from the brake-wheel3 to leave said wheel free to rotate. Theshape of the engaging end of the camarm 16 is such that when the parts are in the position shown in Fig. 3 said end, in connection with the shoulder 13", acts as a lock to prevent any accidental displacement of the parts and the application of the brake on the'brake wheel. It will be understood that the adjustable nut 9 on the lower end of the connector 8 is in such a posi tion on said connector, relative to the lug 4 on the brake-lever 4 when the brake is on the brake-wheel that there will be a space between said nut 9 and the lug 4", as shown in Fig. 2, so that the spring 6 may exert its full tension on the brake-lever to operate the same. When it is desired to start the loom and the shipper lever 14 is moved into its upright position from the position shown in Fig. 2, said shipper-lever comes in contact with the horizontally-projecting end 10 on the lever 10 and moves or rocks said lever inwardly and carries with it the arm 18 and the cam-arm 16, causing the end of the cam-arm 16 to be disengaged from the end 13" of the recess 13, and allows said cam-arm 16 and the arm 18 to drop down by gravity into the position shown in Fig. 4. When the loom is stopped, the shipper-handle is moved outwardly from the position shown in Fig. 4 to the position shown in Fig. 2. The lever 10 through the action of the spring 6 is immediately moved back into the postition shown in Fig. 2, allowing the spring 6 to act on the brake-lever 4 and apply the brake 4 to the brake-wheel 4, all as will be fully understood by those skilled in the art. 7

Referring to Figs. 6, 7, 8, and 9, I have shown in said figures a modified construction of my improvements applied to a brake mechanism having a different form of ship per-lever. In said figures, 1 is the loom side or frame. 19 is the shipper-lever, having a hub 19 pivotally mounted on a stud 20 and having a handle portion 19. The lower end of the shipper-lever 19 carries a pin 21, which extends into an elongated slot 22 in the upper part of a lever 22, the hub 22 of which is pivotally mounted on a pin 23. The lower part of the lever 22 is made forkedto receive the end of a rod or connector 24 to the driving-belt pulley (not shown) of the loom. The lever 22 has a side extension 22 thereon, the lower edge of which is adapted to engage the upper end 25 of a stand 25. A spiral spring 25 is attached at one end to the lower end of the stand 25 and at its other end to the outer end of the projection 22. Pivotally mounted on the stud 20, outside of the hub 19 of the shipper-lever 19, is a hub 26 of a lever or arm 26, the upper free end of which is adapted to engage and rest against a projecting part of the shipper-lever 19. (See Figs. 7 and 9.) Extending out from the hub 26 of the lever 26 is a projection 26, to which is pivotally connected the upper end of the connector or link 27. The lower end of said connector or link 27 extends loosely through an opening in the end of a brake lever 28. On the lower end of the connector 27 is threaded an adjustable nut 29. A spiral spring 30 is attached at its upper end to the brake-lever 28 and at its lower end to a stationary part. (Not shown.) The brake lever 28 (only the end of which is shown) may be of the same construction and operation as the brake-lever above described. The upright arm or lever 26 carries a rocking-pin 31. Fast on one end of said pin is the hub 32 of an arm 32, having thereon a handle or knob 32". On the opposite end of said pin 31 is fast a cam-arm 33, the free end of which is adapted to engage a stationary projection 34 on the frame. The downward movement of the arm 32 and the cam-arm 33 is limited by the engagement of a projectlon on the inner end of the arm 32 with the front edge of the lever 26, and the upward movement of the arm 32 and cam-arm 33 is limited by the engagement of the arm 32 with an extension 26 on the arm 26. The shape of the projection 34 is such that it acts to prevent any accidental movement of the cam-arm 33. (See Fig. 8.) The shipper-lever 19 has a projection 19 on its inner side and is adapted to be engaged by the end of a stop-motion lever 35, supported on the under side of the breast-beam 15 in the'ordinary way. A stop-motion lever 36, pivoted on a bolt 37 on the upper side of the breast-beam, extends in the path of and is adapted to be engaged by the shipper-lever 19 in the ordinary way.

When the loom has been stopped and the brake is in contact with the brake-wheel, as shown in Fig. 1, the several parts of the mechanism just described will be in the position shown in Figs. 6 and 7. When it is desired to release the brake, the arm 32 is moved upward, by means of the knob 32", to rock the pin 31, and with it the cam-arm 33. The free end of the cam-arm 33 comes in contact with the projection 34, and the arm 32, engaging the projection 26 on the lever 26,

rocks and moves backwardly said lever, as shown in Fig. 8, and through connector 27 raises the brake-lever 28 against the action of the spring 30 to release the opposite end of the brake-lever from the brake-wheel, as above described in connection with Figs. 1 to 5. When the shipper-lever 19 is moved to start the loom, it comes in contact with the upper end of the lever 26 and moves said lever backwardly and disengages the end of the cam-arm33 from the stop 34, allowing said cam-arm 33 and the arm 32 to drop down by gravity into the position shown in Fig. 9. When the cam-arm 33 is moved into the position shown in Fig. 9, it cannot come in contact with the projection 34 when the shipper-lever 19 is moved'to stop the loom, and the spring 30 will act to operate the brake-lever to apply the brake and through link 27 to move the lever 26 into the position shown in Fig. 6.

The advantages of my improvements will be readily appreciated by those skilled in the art. They are of simple construction and may be adapted to be applied to and used in connection with the ordinary form of brake mechanism employed on looms to release the brake after the loom is stopped and allow the turning of the loom by hand, and when the loom is started the parts of the mechanism are automatically operated to allow of the automatic applying of the brake when the loom is again stopped.

It will be understood that the details of construction of my improvements may be varied, if desired.

Instead of having the movable arms 16 and 33 provided with cam-surfaces they may be made without them and the stationary parts 13 and 34 be made with cam-surfaces and the same results obtained, as will be readily understood.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a loom, mechanism for releasing the brake from the brake-wheel independently of the shipper-lever, said mechanism comprising a pivoted lever connected with the brake-lever, and said brake-lever, an arm carried on said pivoted lever and adapted to engage a stationary part, which part acts to hold said arm from accidental movement, and means for moving said arm to cause it to engage said stationary part, the engagement of said arm withthe stationary part causing the movement of the pivoted lever and the release of the brake from the brake-wheel.

2. In a loom, the combination with mechanism for releasing the brake from the brakewheel independently of the movement of the shipper-lever, said mechanism comprising a pivoted lever connected with the brake-lever, and said brake-lever, a rocking cam-arm carried on said pivoted lever, and having a camsurface thereon, and adapted to engage a stationary part, which part acts to hold said cam-arm from accidental movement, and means for moving said cam-arm to cause it to engage said stationary part, the engagement of said cam-arm'with said stationary part causing the movement of said pivoted leverand the release of the brake from the brake-wheel, of the shipper-lever adapted to engage and move said pivoted lever when said shipper lever is moved to start the loom, and to hold the brake released from the brakewheel, and release the cam-arm and allow it to return to its inoperative position.

ALBERT A. GORDON, JR.

Witnesses: JOHN C. DEWEY, M. HAAs. 

